The head coefficient, power coefficient, and efficiency decreased with increasing axial clearance.
随轴向间隙扩大，超小型泵的扬程系数、功率系数和效率都逐渐降低。
The analysis results show that the maximal value of the pump head coefficient declines when the flow rate increases;
结果表明：迷宫螺旋泵扬程系数最大值随流量的增大而减小；
At the same times, the relationships of the head coefficient with the number of the blade, the throat area and the sectional area of the collector were analyzed.
指出切线泵的扬程系数与叶片数、喉部面积、集液器断面积的关系。
The non-dimensional pump head coefficient tends to become larger than the quasi-steady value at the very beginning of the start, which indicates obvious transient effect.
在启动初始阶段，无量纲扬程呈现很大值，继而迅速减小到低于准稳态假设值，表现出明显的瞬态效应。
Based on the theory and the experience, the requirements for increasing the head coefficient under the condition of maintaining the efficiency were proposed in this paper.
本文从理论和实例出发，分析了在不降低效率的前提下，提高泵扬程系数的条件。
Advantages: good toughness, low friction coefficient of the ruby head, long life.
优点：有较好的韧性，宝石头部摩擦系数低，具有超长的使用寿命。
The loss of efficient head of circulation pump in the primary loop of PWR will increase with the increase of resistance coefficient of JetPump under forced circulation.
强迫循环条件下，压水堆一回路主循环泵有效压头的损失随喷射泵阻力系数的增加而增加；
According to hydraulic principle, the change of efficient water head, discharge coefficient and discharge of orifice along porous pipes have been discussed and checked by experiments in this paper.
运用水力学原理，对多孔配水管孔口出流量公式的孔口作用水头、孔口流量系数及沿程孔口出流量的变化问题进行了理论分析和试验验证。
The optimum design example shows that the variation coefficient of load torque acting on cutting head is decreased 13.
优化设计实例表明，截割头的负载转矩变差系数减小了13。
The influence of flowing area, structural of valve head, inlet density and outlet specific volume to mass flow coefficient were studied.
得到了膨胀阀的流通面积、阀头结构、膨胀阀入口密度、阀后比容对流量特性的影响，并拟合了流量系数关联式。
To general problem of the slab head bending in rolling, the effect of geometric shape coefficient of the deformation zone and entry Angle on head bending is researched.
本文针对中厚板轧制过程中因头部翘曲而影响产品质量和产量这一生产中普遍存在的问题，研究了变形区几何形状系数和送入角变化对轧件头部翘曲的影响。
The main purpose of the experimental study on the water fow in the transition region of an aqueduct is to find out the local coefficient of head loss in the region.
渡槽渐变段水力学试验的基本目的，是测定渐变段的局部水头损失系数。
Drag of the train head is obtained by the method of surface integral and drag coefficient can be computed at the same time.
通过表面积分的方法得到各种列车车头的阻力，进而计算得到了车头模型的阻力系数。
Meanwhile, we choose different costal board width ratios, in order to get the trend of head water losing coefficient.
结合山西省西龙池抽水蓄能电站，对引水岔管进行了物理模型试验，研究了肋宽比对岔管局部损失系数的影响。
A series of train heads is obtained by changing the rate of length and width of a certain train head, in order to know if the rate will affect the drag coefficient.
对于同一种车型改变了它的细长度得到一系列车头模型，分析计算了细长度对车头阻力系数的影响。
The variability of the pressure head, velocity and hydrodynamic dispersion coefficient obtained from conditional simulation are smaller than those obtained from unconditional simulation.
条件模拟方法计算出的水头、流速和水动力弥散系数的标准差要小于非条件模拟的结果；
The invention relates to a making method of adjusting the elasticity coefficient of the hitting surface of a golf rod head.
本发明涉及一种调整高尔夫杆头击球面弹性系数的制法。
With the model, many parameters can be obtained such as water head, equivalent mechanical fissure width, seepage coefficient, and hydraulic gradient etc.
应用该模型可计算出二维裂隙网络中任意交点（内结点）的水头、等效水力隙宽、渗透系数、水力梯度等参数。
And coefficient of local loss-of-head of the water valve is 2.08. This optimum method is suitable for optimization parameter design of other parts in waterway system.
室内样机试验测得的水阀局部水头损失系数为2.08。该方法适用于水路系统其他部件参数的优化设计。
With the shearing deformation theory and deductive theory, the calculational formulas of flexibility coefficient of the pile head can be obtained.
采用剪切位移法，利用递推原理导出桩顶柔度系数的计算公式；
To increase the head of bulb turbine, it is necessary to improve the runner blade design method and design high head bulb turbine with good energy and cavitation coefficient performance high.
欲提高贯流式水轮机的使用水头，应改进转轮叶片的设计方法，以设计出能量和气蚀性能良好的高水头贯流式水轮机。
To increase the head of bulb turbine, it is necessary to improve the runner blade design method and design high head bulb turbine with good energy and cavitation coefficient performance high.
欲提高贯流式水轮机的使用水头，应改进转轮叶片的设计方法，以设计出能量和气蚀性能良好的高水头贯流式水轮机。
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